# vim:fileencoding=utf-8:noet
from __future__ import (unicode_literals, division, absolute_import, print_function)
try:
import vim
except ImportError:
vim = object()
from powerline.bindings.vim import bufvar_exists
from powerline.segments.vim import window_cached
@window_cached
[docs]def nerdtree(pl):
'''Return directory that is shown by the current buffer.
Highlight groups used: ``nerdtree:path`` or ``file_name``.
'''
if not bufvar_exists(None, 'NERDTreeRoot'):
return None
path_str = vim.eval('getbufvar("%", "NERDTreeRoot").path.str()')
return [{
'contents': path_str,
'highlight_groups': ['nerdtree:path', 'file_name'],
}]